岩石切削工具の摩耗について

微小切込における摩耗形態について (第1報)

抄録

The wear of the cutting tool is one of the most important factors in the cuttingpractice.
We, firstly, have studied the tool wear in rock cutting under a condition of the orthogonal cutting with a small depth of cut so that the chips flowed out in the form of shear type.
In case of this cutting, the wear on the rake face did not almost be found, but only a round wear of the tool edge or a flat wear of the tool flank took place. Generally, in case of cutting of hard rocks such as granite, the flank wear largely developed, not likely as for soft rocks in which the tip wore roundly. When the thrust component of the ploughing force was larger than the cutting component, the flank wear was dominant, and for aninverted relation between both components, the round wear of the tool edge took place.
The calculated values of the ploughing force components at the bluntedtool edge with various types of wear, using some stress distribution models, agreed with the measured values.